NTSB Identification: CHI88DEV02.
The docket is stored on NTSB microfiche number 38879.
Accident occurred Monday, July 18, 1988 in CAPE GIRARDEAU, IL
Probable Cause Approval Date: 01/16/1990
Aircraft: GRUMMAN G-164A, registration: N677U
Injuries: 1 Uninjured.

THE PLT WAS APPLYING CHEMICALS TO A FIELD WITH 3 RADIO TRANSMISSION TOWERS ALONG ONE SIDE. HE RPRTD THAT AS HE WAS FINISHING THE FIELD, HE CIRCLED ONE OF THE TOWERS, THEM MADE A FINAL SWATH RUN ACROSS THE END OF THE FIELD. HE STATED THAT AS HE PULLED UP FROM THE SWATH RUN, THE ACFT ENCOUNTERED WAKE TURBULENCE FROM THE 360 DEG TURN THAT HE HAD JUST MADE AROUND THE TOWER. SUBSEQUENTLY, THE ACFT BANKED TO THE RIGHT & COLLIDED WITH TWO OF THE UPPER GUY WIRES, DAMAGING THE RIGHT WING TIPS & PROP. THE WIRE STRIKE DAMAGED THE AILERON SYSTEM, SO THE PLT MADE A POWER OFF FORCED LANDING IN A CORNFIELD, WHERE THE ACFT NOSED OVER.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

IN-FLIGHT PLANNING/DECISION..IMPROPER..PILOT IN COMMAND


Contributing Factors

OBJECT..GUY WIRE


Contributing Factors

TERRAIN CONDITION..CROP


Contributing Factors

WAKE TURBULENCE..ENCOUNTERED..PILOT IN COMMAND

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